It hadn't ever occurred to me to look for pirated patterns :D Here are some sites with a ton of free patterns.
https://www.allfreesewing.com/
https://vintagepatterns.fandom.com/wiki/Main_Page
https://threadsmonthly.com/free-sewing-patterns/
https://lovesewing.com/free-sewing-patterns-projects/
Z-Library also has a ton of stuff.